If I give you my idea and you give me yours, then we each have two ideas, and together we have four.

If I give you my idea and you give me yours, then we each have two ideas, and together we have four.

如果我给你我的想法，你也给我你的，那么我们每个人都有两个想法，我们一起有四个。

-- Gerard Nierenberg 尼尔伦伯格